Landmark Plastic Rose Pot 1020 Seedling Tray - 21 Cells - 3x7 - 2.88in Cell - Black

Drainage-Optimized Rose Pot Trays for Clean, Healthy Seedling Production

The Landmark Plastic Rose Pot 1020 Seedling Tray (21ST) features 21 round cells in a 3x7 arrangement across a 10.8in x 21.23in footprint. Each 2.88in cell includes a drain hole and root channels that encourage healthy root development and prevent waterlogging. Thermoformed from durable black plastic for long-lasting performance in professional propagation environments.

Key Features & Benefits

• 21 Round Cells -- 3x7 Layout: Efficient spacing for seedling production in a standard-compatible 1020 footprint.
• 2.88in Cell Diameter: Round cell shape promotes natural root-ball formation for easy transplanting with minimal root disturbance.
• Drain Holes in Every Cell: Prevents overwatering and waterlogged media, supporting healthier root zones and faster establishment.
• Root Channels: Guides root growth and improves air circulation at the cell base for stronger root systems.
• Tray Dimensions: 10.8in W x 21.23in L x 4.0in D: Slightly oversized footprint for added cell depth and stability.

Who Should Use This

Greenhouse growers, nursery propagators, and flower producers who need a reliable, drainage-optimized tray for seedling and cutting production. Particularly suited for transplant operations where clean root-ball extraction is critical.

Compatibility

Designed for use with standard 1020 propagation systems and bench configurations. Compatible with overhead and flood-floor irrigation setups. Works with peat-based, coco coir, and soilless growing media. Fits most standard propagation rack systems.

Frequently Asked Questions

Do the cells have drainage holes?

Yes -- every cell includes a drain hole to allow excess water to escape, preventing waterlogging and supporting healthy root development. Combined with the molded root channels, drainage stays consistent across all 21 cells.

What is the cell diameter of the 21ST tray?

Each cell is 2.88in in diameter with a round shape that promotes uniform root-ball formation for clean transplanting. The round profile is a deliberate contrast to the square cells used in most L Series and plug trays.

What are the overall tray dimensions?

The tray measures 10.8in W x 21.23in L x 4.0in D, slightly larger than a standard 1020 footprint for added cell depth and tray stability. Confirm bench or carrier clearance against the 4.0in depth before ordering in volume.

How do root channels improve seedling development?

Root channels are molded guides at the base of each cell that direct root growth, improve air circulation, and prevent root circling for healthier, more uniform transplants. That circulation is especially useful in the deeper 2.88in round cell used on this tray.